Breathing face mask

Equipment for safety – protection – and rescue – Fire extinguisher or casing therefor – Portable or hand held

Patent

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Details

128141R, D2902

Patent

active

D02493683

REFERENCES:
patent: D213077 (1968-12-01), Holloway
patent: 2910062 (1959-10-01), Potash
patent: 3181531 (1965-05-01), Angioletti
patent: 3227159 (1966-01-01), Borgia et al.

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